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What is GSEB Class 10 Maths Question Paper 2023 about?

1) Let 5 + 2√7 be rational and equal to p/q where p and q are integers with no common factors 2) (p/q)2 = (5 + 2√7)2 = 25 + 20√7 + 14 3) 25 + 14 = p2/q2 and 20√7 = 2p/q 4) 20√7q = 2pq 5) √7 is irrational, which is a contradiction. Hence, 5 + 2√7 must be irrational.

Author

Mere Hamsafar

Language

EN